Test-taking dispositions and motivation have been proposed as moderators of employment test validity. In a simulated, multiorganization employment system, scores on the Test Attitude Survey (TAS) were found to moderate the validities of both an ability and a personality test used to predict a performance criterion. The criterion-related validity of the personality test was found to be higher for a subsample with less positive test-taking motivation than for a subsample with higher test-taking motivation. An opposite effect was found among the subgroups for the ability test. Range restriction and the predictability of individuals with high and low test-taking dispositions were examined as explanations for the findings
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Schmit et al. (1992) studied this question.